Mining-machine.



PATENTED SEPT. 1, 1908. G. SANTA.

MINING MACHINE.

APPLICATION FILED SEPT. 17, 1907. 7

2 S'HEETSSHEET 1.

No. 897,415. PATENTED SEPT. 1, 190a.

- G. SANTA.

MINING MACHINE.

APPLICATION FILED SEPT. 17, 1907.

2 SHEETS-SHEET 2.

AWE/FIVE) GESA SANTA, OF SAN FRANCISCO, CALIFORNIA.

MINING-MACEEZNE.

Specification of Letters Patent.

latented Sept. 1, 1908.

Application filed September 17, 19M. eerie No. 393,365,

To all whom it may concern: I

Be it known that I, GESA SANTA, of the city and county of San Francisco,State of California, have invented certain new and useful Improvementsin Mining-Machines, of which the following is a specification.

The invention relates to mining-machines of that class havingas thecutting element a movable cuttin -chain.

Objects of t e invention are improved means of support, operation andcontrol of the operative parts of the machine.

The nature of the invention will a pear from the following descri tionand cl lms, read in connection with t e accompanying drawings, in whichFigure 1 shows in side view, with parts broken away, a coal-miningmachine embodying my invention, Fig. 2 is a plan of the machine of Fig.1, Fig. 3 is a vertical longitudinal section on line 33, 'Fig. 2, on alarger scale, and with the cutting-chain removed, and Figs. 4 and 5 arerespectively a face view and a side view of a portion of thecutting-chain, on a larger scale than the preceding figures.

Similar letters of reference indicate corresupports and adjustableagainst the mine roo Bearings a, a, of the bed sup ort longitudinallybelow the same a shaft carrying a bevel pinion c, meshing with a bevelgear d, loose on leg 6, to which is connected integrally or otherwise adriving sprocket-wheel B, u on which sprocket wheel and a sproc ct-wheelD at the outer end of a chainboom C is carried the cutting-chain E. Thechain has thereby an axis of support lying within the axis of thedriving s rocket. Boom C is pivoted at the leg e, an is supportedbetween the swinging axis and its outer end by an arm F swinging u on anextension of the leg c above the ed.- The boom 0 extends within thechain and is con- "tinuous and rigid throughout its length andmotor-shaft and gear g upon drive-shaft b, to said shaft 7), and thencethrough pinion c, and gear (1, to sprocket B, whereby chain E is movedin cutting direction according to the direction of its teeth, asindicated by arrow in Fig. 2, or in reverse direction, according to.

the direction of motion of the motor.

Adjustment of the chain is efiected by a screw 12 in a headblock '0slidably supported on the boom and carrying sprocket-wheel D, said screwbearing at its inner end against the boom and when rotated in one or theopposite direction forcing the headblock and sprocket-wheel D fromsprocket-wheel B, or permitting approach, and thereby tightening orloosenln the chain.

Fixed upon t e arm F is a segment ear h, with which meshes a worm h upona shaft b mountedin standards upon the bed and carrying a bevel gear 4;,meshing with a bevel gear 70 fast upon a gear-shaft k mounted instandards of the bed and supporting loose thereon oppositely-disposedbevel gears Z, m, each constructed to form at its inner face aclutch-member ada ted to be engaged by a corresponding member of aclutch I splined to shaft k and of such width as to stand in medianposition between and free from both gears Z and m, as shown in Fi 2, butto be moved by means of a controlling-handle J into engagement witheither gear, while re maining in rotative connection with shaft is. Aworm s on shaft b, drives wormwheel r on shaft 0, mounted above the "bedand carrying a bevel gear 1' meshing at opposite sides with and drivingin opposite directions constantly gears Z and m. Motion isthence'transmitted in one direction or the opposite, clutch I being inengagement with one or the other of gears Z, m, to shaft k gears 7c andl, shaft worm h and gear it, whereby arm F is swung, correspondinglyswinging boom 0 "and chain E 1n one or the other direction about theswinging axis.

Control of swinging movement is by means of handle J, by movement ofwhich in one direction or the other clutch I is thrown at will intoconnection with either constantlymoving bevel 'g'ear Z or m and therebyswinging motionin one or the opposite direction imparted; or withdrawnto median position, in which position swinging movement is discontinuedand no such movement imparted to the boom and chain. The chain compriseslinks, alternately wide and narrow,

each link composed of opposed. parallel link v links are successivelyopen'links.

members, the link-members 1' of the narrow links having each teeth, one,at each end of the link-member, projecting outwardly, forwardly andlaterally in the same direction from the body of the link, the teeth ofeachmember in the same direction as the teeth of the other member; andthe link-members 1 of the wide links having each teeth, one at each endof the link member, projecting outwardly, forwardly and laterally in thesame direction from the body of the link, the teeth of each member indivergent direction from the teeth of the other member; and all theteeth of each narrow link in divergent direction from the: teeth of thesucceeding narrow link. The teeth of the wide links roject laterally ateach side of the chain, lieyond the teeth .of the narrow links. The Pins1* in openings in the link-members space the linkmembers and connect thesame and the-links. Any suitable form of chain may be employed. The leg6 is located at the forward, narrow end of the bed A. The lower end ofsaid leg 6 is pointed, and the point is rounded or otherwise formed soas to engage the minefloor at differentangles, thereby affording auniversal support at the swinging axis of and withinthe chain, withwhich cooperate the "supports t, t, arranged equidistantly from andtriangularly therewith, rearwardly and at each side thereof, and at theopposite side of the swinging axis from the cuttlng field of the chain,to determine by engagement with the mine-floor or a rest thereon thelevel arrangement or desired inclination of the cutting-chain.

By constructing thebed with a'narrow end, 4

as described, and pivoting the chain-boom at the said narrow end, theaxis of the boom is enabled to be brou ht close to the working face ofthe coal, an rigidity of support is afforded for the boom close to theface, thereby enabling deep and eifective cutting to be accomplished bythe chain.

The wheels N, N, extend downwardly below the legs t, t, and providesupports'hlgher than the legs, thereby when ap ed increasing the rearheight of the machine and lowering the chain height. They facilitatetransfer of the machine between successive cutting operations.

The invention is not limited to the details of construction shown anddescribed.

I claim. i

1. A post adapted to engage the minefloor, a driving-sprocket wheel uponthe said post, a cutting-c ain upon the said drivingsprocket wheel andhaving an axis within the said post, means supporting the saidcuttingchain in position for cutting, means for operating the saiddriving-sprocket wheel for driving the said cutting-chain for cutting,

and means for swinging the said cuttingchain about the said post.

2. A post adapted to engage the mine floor, a driving-sprocket wheelupon the said post, a boom pivoted upon the said post, a cutting-chainupon the said driving-sprocket wheel and carried by the said boom andhavingan axis within the said post, means for operating the saiddriving-s rocket wheel for driving the said cutting-c ain for cutting,

and means for swinging the said boom about the said post. I i

3. A bed, a post supporting the said bed, a driving-sprocket whee uponthe said post, a boom pivoted upon the said post, a cuttingchain uponthe said driving-sprocket wheel and carried by the said boom and havingan axis within the said post, means carried by the said bed foroperating the said drivingsplrocket wheel for driving the saidcuttingain for cutting, and means carried by the said bed for swingingthe said boom and the said cutting-chain about the'said post.

4. A bed, posts sup orting the said bed, a

driving-sprocket whee upon one of the said posts, a boom pivoted uponthe said post, an arm pivoted to an extension of the said post andsupporting the said boom, a cuttingchain upon the said driving-sprocketwheel and carried by the said boom and having "an axis lying within thesaid post, means carried by the said bed for operating the saiddriving-sprocket wheel for driving the said outting-chain for cutting,means carried by the said bed for swinging the said boom and the saidcutting-chain about the said 0st, and a jack connected with the said bedor bracing the same.

5. A cutting-chain, a post, a boom pivoted upon the said post andcarrying the said outting-chain, said post being adapted at its lowerend to engage the mine-floor within the said cutting-chain, means foroperating the said cutting-chain for cutting, and means for swinging thesaid boom about the said post.

6. A cutting-chain, a post, a boom pivoted upon the said post andcarrying the said outting-chain, the said post being adapted at itslowerend to engage the mine-floor within the said cutting-chain and inline with the swing ing axis of the said .boom, means for operat-' saidposts and carryingth'e said cuttingchain, said .post being adapted'atits lower end to engage the mine-floor within the said cuttingchain,means for operating the said cutting-chain for cutting, and lmeans forswinging the said boom about thefsaid post.

8. A cutting-chain, a post adapted at its lower end to engage themine-floor within the said cutting chain, a boom continuous and rigidthroughout its length pivoted upon the said post and extending withinthe said cutting-chain and carrying the said cuttingchain, means foroperating the said cuttingchain for cutting, and means for swinging thesaid boom-about the said post. I

9. A cutting-chain, a bed, posts below the said bed adapted to engagethe mine-floor and supporting the said bed, a boom pivoted below thesaid bed u on one of. the S8116. posts and carrying the saidcutting-chain, means for operating the said cuttingbhain for cutting,means for swingin the said boom about the said 0st, and a j ac forbracing the said bed 1002. ed at the upper side of the same between thesaid posts.

10. A cutting-chain, a bed having a narrow end, a post adapted to engagethe minefloor supporting the said bed and located at the said narrow endof the same, a boom piv oted below the said bed upon the said post andcarrying the said cutting-chain, means for operating the saidvcutting-chain for cutting, and means for swinging the said boom aboutthe said post.

GESA SANTA.

Witnesses J. L. SMITH, J. 0. SMITH.

